PPP Serial Trouble

Discussion in 'TiVo Underground' started by Mephistopheles, Aug 25, 2004.

  1. magnus

    magnus Tivo User

    2,507
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    Nov 12, 2004
    Texas

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    That is very good advice, I can see that it would be very useful. I did look that up about Sveasoft and updating the firmware to see the logging (apparently, linksys comes stock with only log of last few attempts in the web interface).

    Anyway, I did get it working today. Apparently it was a faulty serial cable. I plugged in the new cable turned off the software firewall and I made the test call with no problem. Then the daily call was made with no problem either. Now, my tivo is running 6.2.

    My plan was to go to radioshack and buy all the parts and try to make my own. I also purchased a cable from 9thTee just to have for future use.

    Any I bought the following parts, to create the cable:

    This is what you will need from your local Radio Shack:

    9-Position Female Solder D-Sub Connector - Cat# 276-1538

    6ft Shielded Extension Cable (1/8") - Cat# 42-2387

    9-Position D-Sub Hood - Cat# 276-1539 (Optional)

    Cut one end off the cable and solder the following:

    Red Wire (Tip) -> Pin2
    Black Wire (Ring) -> Pin3
    Silver Wire (Sleeve) -> Pin5

    Here's a link to the information I used to make the cable, so maybe I missed something who knows.... but the 9thTee cable works like a champ.

    I looked over the cable I made and all appears to be right according to the instructions.

    d e a l d a t b a s e forum site so you'll have to remove the spaces.

    http://d e a l d a t b a s e/forum/printthread.php?t=9724


    Thanks for helping maybe this post will help someone else that's having problems.



     
  2. agilityman

    agilityman New Member

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    Mar 20, 2005
    Carmel, NY
    Thanks John for the reply. I have a Dell PC 2.4 ghz, XP. Use normal com port. Device manager shows the modem even when there is no icon in Network Connections. No hardware conflicts.

    I've noticed that the icon for inoming connections dissapears in Network Connections when I reboot.

    Thanks for your help.
     
  3. Yog-Sothoth

    Yog-Sothoth MRV Junkie

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    Jun 14, 2005
    Fountain, CO
    That is the pinout for a straight-through cable. Swap the tip and ring connections for a direct connection between TiVo and computer. I posted this elsewhere in this forum: http://www.tivocommunity.com/tivo-vb/showthread.php?t=244628 .
     
  4. magnus

    magnus Tivo User

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    Nov 12, 2004
    Texas
    That could have saved me a lot of hassle. This might be a dumb question but.... i'll ask anyway. What is the straight-through cable connection for? Is it used when you want to use bash or something? Thanks for the info.

     
  5. Yog-Sothoth

    Yog-Sothoth MRV Junkie

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    Jun 14, 2005
    Fountain, CO

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    That would be used to connect the TiVo to something such as a modem. It works the same with ethernet cables - to connect a computer to a hub, switch, or cable modem, a straight-through cable is used, but to connect two computers directly, a crossover cable is used.

    The following is from this page:

    There are only three wires to worry about: RX, TX, and GND. You don't even need to bother wiring the rest of the pins. On the TiVo side, the mini-stereo (TRS mini-plug) connector is wired like this:

    Tip to Pin 3 (TX)
    Ring to Pin 2 (RX)
    Sleeve to Pin 5 (GND)

    If you make your own wire, you'll want to swap RX and TX on one of the ends (make Pin 2 TX and Pin 3 RX) so you won't need a null-modem adapter.


    To sum all that up, you can't connect one computer's transmit to another computer's transmit; the same goes for the receive.

    For the least chance of "bricking" your router, I recommend you use HyperWRT instead.
     
  6. cactus46

    cactus46 New Member

    770
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    Nov 17, 2001
    Phoenix AZ USA
    Hi agilityman,

    If the modem is there, then your Incoming Connection is probably intact. My Incoming Connections disappear after a reboot until another TiVo call is initiated and my "Communications cable between two computers" is still in my Device Manager under Modems.

    In my case I have a second firewall program I have to disable to make the connection work but it always works when I disable the Kerio Personal Firewall. I haven't taken the time to configure the Kerio firewall.

    Are you sure your TiVo won't make a connection after a reboot? I am interested in hearing more. It seems strange that you would have to re-do your Incoming Connection/modem.

    Keep us posted.

    John

     
  7. cactus46

    cactus46 New Member

    770
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    Nov 17, 2001
    Phoenix AZ USA
    Yog-Sothoth,

    Thanks for your valuable input in this thread! I know with all of the great input that we will be able to help the TiVo Community on their road to serial/PPP connections.

    And I know there are others in the TC who could add their thoughts, too. And thanks in advance!

    John

     
  8. cactus46

    cactus46 New Member

    770
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    Nov 17, 2001
    Phoenix AZ USA
    Hi magnus,

    I'm happy to read of your persistence in finding the resolution to your problem! And perhaps it will help someone to the resolution of their problem, too.

    Happy TiVoing with serial/PPP!

    John

     
  9. Yog-Sothoth

    Yog-Sothoth MRV Junkie

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    Jun 14, 2005
    Fountain, CO
    I just confirmed that XP's built-in firewall in no way affects whether your TiVo can communicate with your PC's serial port.
     
  10. Yog-Sothoth

    Yog-Sothoth MRV Junkie

    388
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    Jun 14, 2005
    Fountain, CO
  11. cactus46

    cactus46 New Member

    770
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    Nov 17, 2001
    Phoenix AZ USA
    It is the same with my Windows XP Firewall. But settings may vary? So I usually recommend disabling all firewalls for a Test/Daily Call. And to re-enable them after a test passes.

    I appreciate the results. Thanks for your note.

    John

     
  12. agilityman

    agilityman New Member

    4
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    Mar 20, 2005
    Carmel, NY
    Hi John-

    Nope, the Tivo won't make a connection after a reboot. I just tried and then checked the modem log and there was an error message that it couldn't connect. I also disabled my firewall, but that didn't help either. No big deal, I'll just have to set up my incoming connection again after I reboot...unless you have any other ideas. Probably like most people in this forum, I am generally obsessed with getting stuff to run just right. However, if we are at a dead end, then so be it.

    Thanks for your help.
    George

     
  13. shufflesmike

    shufflesmike New Member

    4
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    May 3, 2005
    I had the same problem but found that if I boot up with the wire plugged in, then when tivo called the connection went through.
     
  14. agilityman

    agilityman New Member

    4
    0
    Mar 20, 2005
    Carmel, NY
    Thanks, but my wire is plugged in when I boot up.
     
  15. cactus46

    cactus46 New Member

    770
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    Nov 17, 2001
    Phoenix AZ USA
    Hi George,

    I don't know what my be causing the problem right now but if you leave the computer on you shouldn't have this problem. :)

    Do you have another computer around that you could try your serial/PPP on? Other than that I have no better ideas right now but stay tuned; someone may come in with a better workable solution.

    Keep us posted.

    John

     
  16. bubba_tx

    bubba_tx New Member

    2
    0
    Jun 22, 2005
    Georgia
    I have followed all of the instructions found on this (and other) googled sites. I have recreated the connection multiple times and still can't seem to get this to work.

    I belive I am hung up at the inf changes because when examing the modem_log it still says UNKNOWN RESPONSE instead of Interpreted Response: Ring.

    I noticed that one post made reference to the mdmhayes.pnf being the compiled version of the inf file. My assumption would be that when I restart after modifying the inf and deleting the pnf that the pnf file would be recreated. However, I never do get a pnf file again.

    Am I missing something or is something not happening? Any assistance is appreciated...really needing 6.2 to get rid of these horrible lags in menu navigation...

    Thanks in advance!
     
  17. cactus46

    cactus46 New Member

    770
    0
    Nov 17, 2001
    Phoenix AZ USA
    This may be the culprit in your case? From another post in this thread: http://www.tivocommunity.com/tivo-vb/showthread.php?p=2831490&&#post2831490

    Look at item #2 in that post. Could this be your problem?

    The mdmhayes.pnf file is re-created after the modem is setup.

    Keep us posted.

    John

     
  18. bubba_tx

    bubba_tx New Member

    2
    0
    Jun 22, 2005
    Georgia
    John,

    I'm going to name my first born child after you...really! (ok, ok, so my grandfather's name is also John, but it works out well).

    After becoming frustrated with this after several days, I met with success (6.2 has been achieved).

    The part that was missing was that the pnf file was not getting regenerated. Apparently there is a bad version of the mdmhayes.inf modifications running around the 'net and those are the ones I had used originally. When I found the correct version, I plugged those in and restarted. The problem was that I did NOT recreate the "modem", thus it never created the new pnf file. Once you pointed me to that little fact, I realized the error of my ways.

    I guess this is what my mom meant when she told me not to take shortcuts in life.

    Anyway, for all those struggling out there...keep at it, there's value to just starting over from scratch (it would have helped me). On the other notes, I used a range of 2 ip addresses, 115200 as the speed, and I used the cable from Tivo, a RS Null Modem adapter, and a Belkin Gender Changer.

    Thanks again!!!
     
  19. scarfa21

    scarfa21 New Member

    25
    0
    Mar 17, 2002
    Ok, i have read this thread, and i have a noob question. I was able to get my tivo and pc communicating, but it hangs at negotiation, like most of us here. My question is this. Do i need a router for this whole thing to work. Im currently using a motorola cable modem and im not sure if it will allow multiple ip addresses?

    thanks in advance
    Kevin
     
  20. cactus46

    cactus46 New Member

    770
    0
    Nov 17, 2001
    Phoenix AZ USA
    Hi Kevin,

    Yes, a router is the simple approach. There are other ways to do network address translation but again a router simplifies the process. Once you get a router assign two IP addresses that will make it through the network mask.

    If your computer is assigned an address of 192.168.1.10, then my suggestion would be assign the two static IP addresses of 192.168.1.25 and 192.168.1.26. So see the addresses that are handed out by the router and assign your static IP addresses accordingly.

    Also, you may have to clone your computer's MAC address into the router for it to be recognized by you ISP. Some ISPs require this and it is easy to do with most routers.

    Good luck and keep us posted.

    John

     

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